help pweaseee D:
Andy has two similar conical hats, Hat A and Hat B. The diameter of Hat A is 18 inches, and the diameter of Hat B is 9 inches. What is the ratio of the volume of Hat A to the volume of Hat B?
2:1
16:1
4:1
8:1

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Volume of a cone is \[\pi*r ^{2}*h/3\]

And diameter is just 2r, so for hat A r=9 in and hat B r=4.5 in

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